v0.2.49..v0.2.50 changeset ElementIdToTagValueMapper.h

diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/ElementIdToTagValueMapper.h b/hoot-core/src/main/cpp/hoot/core/visitors/ElementIdToTagValueMapper.h
new file mode 100644
index 0000000..e85b32c
--- /dev/null
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/ElementIdToTagValueMapper.h
@@ -0,0 +1,77 @@
+/*
+ * This file is part of Hootenanny.
+ *
+ * Hootenanny is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --------------------------------------------------------------------
+ *
+ * The following copyright notices are generated automatically. If you
+ * have a new notice to add, please use the format:
+ * " * @copyright Copyright ..."
+ * This will properly maintain the copyright information. DigitalGlobe
+ * copyrights will be updated automatically.
+ *
+ * @copyright Copyright (C) 2016, 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ */
+#ifndef ELEMENT_ID_TO_TAG_VALUE_MAPPER_H
+#define ELEMENT_ID_TO_TAG_VALUE_MAPPER_H
+
+// hoot
+#include <hoot/core/info/OperationStatusInfo.h>
+#include <hoot/core/elements/ConstElementVisitor.h>
+#include <hoot/core/util/StringUtils.h>
+#include <hoot/core/criterion/ElementCriterionConsumer.h>
+
+namespace hoot
+{
+
+/**
+ * Creates a mapping between an element ID and the value of the specified tag, if it has the tag
+ */
+class ElementIdToTagValueMapper : public ConstElementVisitor, public OperationStatusInfo,
+  public ElementCriterionConsumer
+{
+
+public:
+
+  static std::string className() { return "hoot::ElementIdToTagValueMapper"; }
+
+  ElementIdToTagValueMapper();
+
+  virtual void visit(const ConstElementPtr& e);
+
+  virtual void addCriterion(const ElementCriterionPtr& e);
+
+  virtual QString getDescription() const
+  { return "Maps element IDs to tag values for a given tag key"; }
+
+  virtual QString getInitStatusMessage() const { return "Mapping tag values..."; }
+
+  virtual QString getCompletedStatusMessage() const
+  { return "Mapped " + StringUtils::formatLargeNumber(_numAffected) + " tag values."; }
+
+  QMap<ElementId, QString> getIdToTagValueMappings() const { return _idToTagValueMappings; }
+
+  void setTagKey(const QString& key) { _tagKey = key; }
+
+private:
+
+  QString _tagKey;
+  ElementCriterionPtr _crit;
+  QMap<ElementId, QString> _idToTagValueMappings;
+};
+
+}
+
+#endif // ELEMENT_ID_TO_TAG_VALUE_MAPPER_H